Case studies that prove right-sizing works
Evidence-led projects that cut capacity, save capex, and keep EV and compliance on track
We connect regulation, design, and technology to shape the future of sustainable housing.
Read this first
We show ask vs need, kVA headroom, and capex avoided. Check the Five C’s, the evidence pack (profiles, EV, heating), and the DNO/IDNO path. Pre-FHS/HEM cases are mapped to today’s logic; newer ones model to it directly. The thread: right-sizing that stays compliant and saleable.
How to read these case studies
Each case compares capacity ask vs evidenced need, shows kVA headroom preserved, and quantifies capex avoided. Use the Five C’s lens (Cost, Capacity, Compliance, Comfort, Carbon) and look for the evidence pack: demand profiles, EV strategy (priority now, pre-wire later), heating options, and DNO/IDNO route. Older work is mapped to today’s FHS outcomes and HEM-style hourly logic; newer work is modelled directly to them. The aim is outcome-first design that clears standards, protects programme, and keeps the commercial story intact.
West Hill Road
Mile Property Group (MPG)
Result: Capital expenditure reduced by over £100k, clearer ICP tendering requirements, non ambiguous values for the PoC application and hours saved.
West Hill Road is a 37-home scheme being developed by Mile Property Group. Current industry practice would have meant an over-sized connection with recommendations at 50-100% higher than our simulated peak maximum. By simulating and modelling the demand profile, HubbPro right-sized the connection at 96KVA making allowance for planned and future EV charge points.
Compliance & standards
Building Regulations Compliant, within Parts F, L & S.
FHS/HEM-ready by design
We size connections using hourly demand profiles, EV arrival curves, and clearly documented assumptions.
That keeps designs aligned with the Future Homes Standard and the Home Energy Model, reduces rework at detailed design, and gives assessors a traceable logic from input to outcome.
If your scheme changes, the envelope updates without restarting from scratch.
What you get: a defendable capacity set-point with headroom rules. What it covers: plots, heat strategy, EV plan, sensitivities, risks. Why it helps: fewer redesign cycles and cleaner DNO or IDNO dialogue
How do you right-size a grid connection for 20–50 plots?
Build a realistic demand envelope: baseline → hourly profiles → EV overlay → sensitivities → pick a set-point that covers credible peaks while preserving headroom.
Can we be EV-ready without upsizing the transformer?
Yes. Install priority chargers now, pre-wire the rest, and use dynamic load management. Add monitoring so load can be tuned as adoption grows.
Will this approach stand up under FHS/HEM and planning?
It’s aligned to HEM-style thinking: hourly profiles, transparent assumptions, and traceable inputs. That reduces redesign risk as standards tighten.
What goes into a procurement-ready DNO/IDNO pack?
Executive summary, demand envelope, EV plan, set-point rationale, options table, risks/dependencies, and a comparability matrix so tenders line up.
Where do you operate and what scheme sizes do you support?
UK-wide, with recent work across the South East and South West. New build and conversions, typically 5–150 plots; larger schemes on request.
Get started today
Unsure if you are oversized on power. Tell us plot count, heat strategy, and current kVA. We will confirm if a study is likely to save money.